Snowplow with side chutes



Nov. 12,1935.

J. o. JOHNSON SNOWPLOW WITH SIDE CHUTES Original Filed Nov. 19, 1928- 3Sheets-Sheet l Nov. 12, 1935.

J. o. JOHNSON SNOWPLOW WITH SIDE CHUTES Original Filed Nov. 19, 1928 3Sheets-:Sheet 2 Nov. 12, 1935. .J. O/JOHNSON Re. 19,754

SNOWPLOW WITH SIDE CHUTES Original Filed Nov. 19, 1928 3 Sheets-Sheet 5Reissued Nov. 12, 1935 UNITED STATES PATENT OFFICE SNOWPLOW WITH SIDECHUTES Original No. 1,816,589, dated July 28, 1931, Serial No. 320,352,November 19, 1928. Application for reissue February 15, 1932, Serial No.593,18!

10 Claims.

This invention relates to a snow plow, and par-- ticularly to a plowadapted to clear highways of snow. As is well known, there are now animmense number of improved and paved highways and it is rapidly becomingthe practice to keep these highways open all winter, even in sectionswhere there is a large amount of snow. It is desirable to have a plowwhich can clear the snow from the highway no matter what the size of thedrifts, and one which will discharge the snow clear of the highway.Where the drifts are very deep and a snow plow cuts through, the snowtends to drop down from the top and sides of the drift and form a talusor bank of snow which narrows and obstructs the road. This result willoccur more commonly where the snow is not thrown far enough to one sideor is not projected over the top of the drift. It is an object of thisinvention, therefore, to provide a snow plow having means for moving thesnow laterally and discharging the same at a considerable height so thatit will be discharged over the side-of the drift or snow bank.

It is a further object of the invention to provide a snow plow havingmeans for moving the snow to one side and discharging the same at someheight, together with means for directing the discharged snow laterally.

It is also an object of this invention to provide a snow plow comprisinga prow portion, a mold board extending laterally from said prow portion,said mold board having a blade or knife at its outer end disposed in asubstantially vertical plane, together with discharge means for the snowdisposed inwardly of said knife.

It is still another object of this invention to provide a snow plow asset forth in the preceding paragraph, in which the outer end of the moldboard is partially closed and has upwardly extending means through whichthe snow is discharged by said discharge means.

It is also an object of this invention to provide a snow plow having aprow portion, a laterally inclined and concave mold board extending fromsaid prow portion, said mold board having its outer end partially closedand means for increasing the discharge opening at the outer end of saidmold board.

It is more specifically an object of this invention to provide a snowplow having a laterally extending concave mold board of partiallycylindrical form at its outer end, having a portion cut away at itsupper side, together with an upwardly extending opensided dischargechute having its lower end embracing the opening formed by said cut awayportion of said mold board, said plow having rotary discharge means atthe outer end of said mold board for discharging the snow through saidchute.

It is still another object of this invention to provide a snow plow asset forth in the preceding 5 paragraph, together with an adjustablecurved deflecting member at the top of said chute for directing the snowlaterally.

These and other objects and advantages of the invention will be fullyset forth in the following description made in connection with theaccompanying drawings, in which like reference characters refer tosimilar parts throughout the several views, and in which:-

Fig. l is a view in front elevation of the plow;

Fig. 2 is a top plan view with some parts broken away and others shownin horizontal section, together with part of the automotive vehiclewhich propels this plow;

Fig. 3 is a partial view in rear elevation;

Fig. 4 is a horizontal section taken on line l--4 of Fig. 5, asindicated by the arrow;

Fig. 5 is a view in side elevation of the plow;

Fig. 6 is a vertical section taken on line 6-6 of Fig. 5, as indicatedby the arrows;

Fig. 'l is a horizontal section taken on line l| of Fig. 6, as indicatedby the arrow; and

Fig. 8 is a vertical sectional view of a portion of the plow taken onthe line 8-8 of Fig. 1.

Referring to the drawings, a. plow is shown com- 30 prising rearwardlyand laterally extending mold boards Ill meeting in a rearwardly andupwardly extending line H at their inner ends, said mold boards beingshown as having forwardly extending flanges connected together by headedand 35 nutted bolts II. The lower edges of mold boards HI are receivedin plates l3 having a forwardly extending tongue or projection I4 at thecenter of the plow. A handle I5 is shown at the center of the plow, asillustrated in Fig. 1, adapted to 4 operate mechanism not shown, to liftthe front of the plow. The mold boards ID are concave and the concavityincreases toward the outer end of the mold boards, which outer ends aresemicylindrical in shape as best illustrated in Fig. 8. 45 The outer endof each mold board is closed or partially closed by a plate I6, saidplate having a triangular upper portion Iia hinged to the upper fixedportion of plate I6 at l1 so as to swing downwardly as indicated indotted lines in Fig. 5. 50 Plate 15a has a hasp 16b hinged theretofitting over a staple llic secured in the side of chute l9, a hook lidbeing adapted to pass through said staple at the outer side of the hasp,said hook being secured to the end of a short chain Hie secured to thechute I9. The top portions of the mold boards II] are cut away along theline l8 as shown in Figs. 1., 3, and 6 and a chute I9 is provided, whichis open at its outer side and extends upwardly above said mold boards.The chute I9 is tapered and has its lower end connected to the moldboard so as to enclose the opening made by said cutaway portion, saidchute having its outer side flush with the outer end of said mold board.A plate forming a cutter bar or blade 29 is disposed at the outer sideof each mold boa-rd I0, said blade extending forwardly from its lowerend toward its upper end and extending outwardly from the center of theplow from its lower end toward its upper end. Blade 20 is attached toplate l6 at its lower end and at its upper end is attached to anextension |9a of chute l9 as shown in Fig. 5. A deflecting member 2| isprovided at the top of chute l9, the same being hinged to the rear sideof said chute at 22. Member 2| has an adjusting handle 23 securedthereto which is. pivotally connected to a pipe or tube 24 extendingdownwardly in the rear of chute I9. Pipe 24 has extending thereinto arod 25 pivoted at its lower end to a bracket 26 secured to the rear ofchute I9. Pipe 24 and rod 25 have holes 21 therein adapted to aline andreceive a. pin carried by swinging handle 28 secured to pipe 24 so thatsaid pipe 24 and rod 25 may be held in various positions. Each moldboard I0 has an opening therethrough adjacent its inner end and abracket 29 is secured to each mold board having an outwardly projectinghub 29a and hub 29b, which projects through the mold board to the rearthereof. The ends of the hubs 29!) are connected to the opposite endsrespectively of a gear housing 3|) disposed in the rear of the moldboards having a rearwardly projecting portion 30a through which extendsa shaft 3|. The shaft 3| is connected by bevel gears, not shown, tolaterally extending shafts 32 enclosed by housings 34, said shafts andhousings extending to the discharge rotors 35 disposed at the front andouter ends of the mold boards l9. Said discharge rotors comprise a.plurality of curved. blades 35a secured at one end to hub 35b and attheir other sides to a ring 350, said ring also supporting one end ofbrackets 36 which extend across and reinforce the rear sides of theblades 35a. The housings 34 are supported by brackets 31 secured to thefront of the mold board. The discharge members 35 are disposed at theouter ends of the mold boards and substantially beneath the chutes l9.Each rotor 35 is thus disposed in a casing formed by the outer portionof the mold board and plate IS. The housing 30 has handles 43 fulcrumedthereon forming shift levers for moving the shafts 32 into and out ofengagement with the rotors 35. Arms 44 are shown for holding the leversin one position. The shaft 3| is connected by a universal joint 38 to ashaft 39 which is in turn connected by a flexible coupling 40 to thecrank shaft of the motor 4| of the propelling automobile or truck, aportion of the frame of which is shown as 42.

The mold boards II] have a bar 45 extending along the rear side alongthe bottom thereof having rearwardly projecting spaced apertured lugs45a forming means for connecting the plow to the propelling vehicle. Aconnecting member 46 is also used pivoted to the frame 42 by the headedand nutted bolts 41 and also pivotally connected to lugs 49 forming partof the plow. The plow or mold boards have a rearwardly projecting frame49 comprising screws 50 used for tilting the plow, some of the operatingmechanism of which is shown as 5|. This mechanism forms no part of thepresent invention and is shown in more detail in the co-pendingapplication of John 0. Johnson, S. No. 120,603, filed on July 6th, 1926,5

now Patent No. 1,754,322. Certain bracing frame members 52 are alsoshown as extending along the rear side of the mold boards In.

In operation the plow will be pushed forwardly from the rear by thetruck on frame 42 and shaft 10 3| will be rotated from the shaft of themotor 4| through the shaft 39. This will, through the gears in housing30 rotate the shafts 32 and rotors 35 will be driven. As the plow movesalong the highway, snow is first encountered by the for- 15 wardlyprojecting prow and the snow is moved laterally and rearwardly along themold boards to the rotors 35. The rotors are driven at high speed andthe snow is engaged thereby and discharges through the openings aboveplates IG and 20 into the chutes l9. The snow is prevented from beingprojected outwardly by the plates I6 and the blades 35a are so formed asto tend to throw the snow tangentially upwardly substantially inalinement with chutes I9, as indicated by the 25 arrows in Fig. 6. Thesnow at the outer side of each mold board is cleanly cut by the cutterbar or blade 20 and any snow inside of this cutter bar or blade isengaged by the rotor 35 and propelled upwardly and outwardly. When theplow 30 is thus operating in a deep drift or bank, the snow will bepropelled upwardly sufficiently to get up over the top of the bank andthe bank will have a downward slope on account of the fact that theblade 20, the plane of the outer end of the 35 mold board and chute l9extends outwardly and upwardly as clearly shown in Figs. 3 and 6. If thedrift or bank is not too high, the deflector 2| will be moved over thetop of chute l9 as shown in Figs. 3 and 6 to throw the snow laterally.If the 40 drift or bank is very high the deflector 2| may be swunginwardly as shown in Fig. 1 by a swinging lever 23 downwardly andtelescoping tube 24 on the rod 25. With the snow thus dischargedupwardly and outwardly the road will be kept clear 45 at the bottom ofthe bank formed in the drift of snow and there will be no tendency forthe snow to drop down to the foot of the bank and form a ridge or taluswhich will obstruct the road. When the plow is operating on lesserdrifts 5 of snow the plate |6a can be swung downwardly and the snowallowed to be discharged more directly outwardly. This will be donewhere there is plenty of opportunity to get the snow well off to theside of the road. The blade 2!) acts 5 effectively to cut through thedrift to form a wall for the snow bank or drift. With plows which merelyoperate at the bottom of the bank and do not discharge the snow at aconsiderable height, the snow falls down after the plow passes 30 asabove described making an objectionable obstruction.

From the above description it is seen that applicant has provided animproved form of plow and one particularly adapted to make a clear and65 well-defined path through a deep bank or drift and a path which willnot be obstructed by the snow caving or falling inward thereinto. Theplow is comparatively simple in construction and can be very durably andruggedly made. The 70 same has been amply demonstrated in actualpractice and found to be very successful and emcient.

It will, of course, be understood that various changes may be made inthe form, details, pro- 76 portions and arrangement of the parts,without departing from the scope of applicant's invention, which,generally stated, consists in a device capable of carrying out theobjects above set forth, in the novel parts and combinations of partsdisclosed and defined in the appended claims.

What is claimed is:

1. A snow plow having in combination, mold boards being forwardly andinwardly inclined and meeting in a central line, each of said moldboards forming a continuous surface of concave form, one of said moldboards having a cut away portion at its outer top edge, a conduitextending upwardly from said mold board, having an open outer side andhaving its lower end secured to said mold board to enclose the cut awayportion, and a rotor disposed adjacent the outer edge of said mold boardadapted to propel the snow upwardly and outwardly into said conduitalong a tangential line.

2. A snow plow having in combination, a mold board extending laterallyand rearwardly and being of partially cylindrical form at its outer end,said mold board having a cut away portion at its top, a chute disposedover said cut away portion and extending upwardly therefrom, a plateextending across the outer end of said mold board and partially closingthe same, but leaving an opening between the top thereof and the top ofsaid mold board, and a rotor disposed adjacent said chute and plate fordischarging snow through said opening and chute in substantially atangential direction.

3. The structure set forth in claim 2, said plate having a top sectionadapted to be swung down to increase the size of said opening.

4. The structure defined in claim 2, and a blade secured to said plateand to said chute and projecting forwardly therefrom, said plateincliging forwardy and outwardly toward its upper en 5. A snow plowhaving in combination, a mold board extending laterally and rearwardly,said mold board being of semi-cylindrical form at its outer end andhaving a cut away portion at its top,

parallel to the axis of concavity of said mold board, adapted to engagethe snow and direct the same upwardly into said chute.

6. A snow plow having in combination, a mold board extending laterallyand rearwardly having 6 a concave surface and being partiallycylindrical at its outer end, said mold board having a cut away portionat its top, a chute extending vertically from said mold board andenclosing said cut away portion at its bottom, said chute being 10 openat its outer side, and the outer side of said chute and the mold boardbeing in substantially the same plane and inclined slightly outwardlyfrom the vertical.

7. A snow plow having in combination, a mold 15 board extendinglaterally and rearwardly and of concave form, a rotor disposed at theouter end of said mold board, a plate closing the lower portion of theouter end of said mold board, a blade extending along the front end ofsaid plate and up- 20 wardly and outwardly therefrom, and a conduitextending vertically from the outer end of said mold board, and intowhich said rotor delivers.

8. A snow plow having in combination, a laterally and rearwardlyextending mold board, a plate closing the lower outer portion of saidmold board, a blade at the outer end of said mold board having aforwardly directed edge, said blade inclining forwardly toward its upperend and inclining slightly outwardly toward its upper end.

9. A snow plow having in combination, a mold board extending outwardlyfrom a central plane and having a concave curved-surface, a snowmovingrotor disposed in front of and adjacent one side of said mold board anda cutter bar extending upwardly at the outer side of said mold board toa point a substantial distance above said mold board and slopingoutwardly toward its upper end.

10. A snow plow having in combination, a mold board extending outwardlyfrom a central plane, said mold board having a substantially concavesurface, a snow-moving rotor in front of and adjacent the outer side ofsaid mold board, a plate at the outer side of said rotor, a chutedisposed above said rotor for receiving snow therefrom and a cutter barextending upwardly along the front of said blade and to a point wellabove said rotor and at the outer side of said chute.

JOHN O. JOHNSON.

